Doping effects on the electrical conductivity of bismuth layered Bi3TiNbO9-based ceramics

2006 ◽  
Vol 100 (4) ◽  
pp. 044112 ◽  
Author(s):  
Zhiyong Zhou ◽  
Xianlin Dong ◽  
Haixue Yan ◽  
Heng Chen ◽  
Chaoliang Mao
Keyword(s):  
Electrical Conductivity ◽  
Doping Effects

Donor and acceptor doping effects on the electrical conductivity of CaBi2 Nb2 O9 ceramics

2013 ◽  
Vol 210 (6) ◽  
pp. 1121-1127 ◽  
Author(s):  
Huanbei Chen ◽  
Xiangxin Guo ◽  
Zhonghui Cui ◽  
Jiwei Zhai
Keyword(s):  
Electrical Conductivity ◽  
Acceptor Doping ◽  
Doping Effects ◽  
Donor And Acceptor

scholarly journals Modulation of Conductivity and Contact Resistance of RuO2 Nanosheets via Metal Nano-Particles Surface Decoration

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2444
Author(s):  
Jongwon Kim ◽  
Seonhye Youn ◽  
Ju Young Baek ◽  
Dong Hwan Kim ◽  
Sumin Kim ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Contact Resistance ◽  
Metal Nanoparticle ◽  
Nano Particles ◽  
Doping Effects ◽  
Surface Decoration ◽  
Surface Metal ◽  
Internal Properties ◽  
Metal Nano Particles ◽  
Contact Engineering

We studied the variation in electrical conductivity of exfoliated RuO2 nanosheets and the modulation in the contact resistance of individual nanosheet devices using charge transfer doping effects based on surface metal nanoparticle decorations. The electrical conductivity in the monolayer and bilayer RuO2 nanosheets gradually increased due to the surface decoration of Cu, and subsequently Ag, nanoparticles. We obtained contact resistances between the nanosheet and electrodes using the four-point and two-point probe techniques. Moreover, the contact resistances decreased during the surface decoration processes. We established that the surface decoration of metal nanoparticles is a suitable method for external contact engineering and the modulation of the internal properties of nanomaterials.

Ti doping effects on the Seebeck coefficient and electrical conductivity of mesoporous ZnO thin film

2019 ◽  
Vol 235 ◽  
pp. 121757 ◽  
Author(s):  
Min-Hee Hong ◽  
Haryeong Choi ◽  
Younghun Kim ◽  
Taehee Kim ◽  
Hyung Hee Cho ◽  
...  
Keyword(s):  
Thin Film ◽  
Electrical Conductivity ◽  
Seebeck Coefficient ◽  
Zno Thin Film ◽  
Doping Effects ◽  
Mesoporous Zno ◽  
Ti Doping

Removing Substrate Background in TEM Microanalysis

1974 ◽  
Vol 32 ◽  
pp. 568-569
Author(s):  
John C. Russ ◽  
Nicholas C. Barbi
Keyword(s):  
Electrical Conductivity ◽  
Rapid Growth ◽  
Organic Film ◽  
Absolute Concentration ◽  
Background Signal ◽  
X Ray ◽  
Elemental Concentrations ◽  
Transmission Electron ◽  
Electron Microscopes ◽  
The Continuum

The rapid growth of interest in attaching energy-dispersive x-ray analysis systems to transmission electron microscopes has centered largely on microanalysis of biological specimens. These are frequently either embedded in plastic or supported by an organic film, which is of great importance as regards stability under the beam since it provides thermal and electrical conductivity from the specimen to the grid.Unfortunately, the supporting medium also produces continuum x-radiation or Bremsstrahlung, which is added to the x-ray spectrum from the sample. It is not difficult to separate the characteristic peaks from the elements in the specimen from the total continuum background, but sometimes it is also necessary to separate the continuum due to the sample from that due to the support. For instance, it is possible to compute relative elemental concentrations in the sample, without standards, based on the relative net characteristic elemental intensities without regard to background; but to calculate absolute concentration, it is necessary to use the background signal itself as a measure of the total excited specimen mass.

Macromolecular structures of biological specimens are not obscured by controlled osmium impregnation

1983 ◽  
Vol 41 ◽  
pp. 606-607
Author(s):  
Klaus-Ruediger Peters ◽  
Samuel A. Green
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Critical Point ◽  
Metal Films ◽  
High Magnification ◽  
Osmium Impregnation ◽  
Instrumental Resolution ◽  
20 Nm ◽  
Continuous Metal

High magnification imaging of macromolecules on metal coated biological specimens is limited only by wet preparation procedures since recently obtained instrumental resolution allows visualization of topographic structures as smal l as 1-2 nm. Details of such dimensions may be visualized if continuous metal films with a thickness of 2 nm or less are applied. Such thin films give sufficient contrast in TEM as well as in SEM (SE-I image mode). The requisite increase in electrical conductivity for SEM of biological specimens is achieved through the use of ligand mediated wet osmiuum impregnation of the specimen before critical point (CP) drying. A commonly used ligand is thiocarbohvdrazide (TCH), first introduced to TEM for en block staining of lipids and glvcomacromolecules with osmium black. Now TCH is also used for SEM. However, after ligand mediated osinification nonspecific osmium black precipitates were often found obscuring surface details with large diffuse aggregates or with dense particular deposits, 2-20 nm in size. Thus, only low magnification work was considered possible after TCH appl ication.

Doping effects on the geometric and electronic structure of tin clusters

2019 ◽  
Vol 21 (44) ◽  
pp. 24478-24488 ◽  
Author(s):  
Martin Gleditzsch ◽  
Marc Jäger ◽  
Lukáš F. Pašteka ◽  
Armin Shayeghi ◽  
Rolf Schäfer
Keyword(s):  
Density Functional Theory ◽  
Electronic Structure ◽  
Density Functional ◽  
Beam Deflection ◽  
Functional Theory ◽  
Doping Effects ◽  
Depth Analysis ◽  
Trajectory Simulations

In depth analysis of doping effects on the geometric and electronic structure of tin clusters via electric beam deflection, numerical trajectory simulations and density functional theory.

Total Body Electrical Conductivity Measurements in the Neonate

1991 ◽  
Vol 18 (3) ◽  
pp. 611-627 ◽  
Author(s):  
Marta L. Fiorotto ◽  
William J. Klish
Keyword(s):  
Electrical Conductivity ◽  
Conductivity Measurements ◽  
Total Body
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